class Opal::SimpleServer

opal -Rserver app.rb
… or use the Server runner …
rackup -ropal -ropal/simple_server -b ‘Opal.append_path(“app”); run Opal::SimpleServer.new’
@example (CLI)
opal-webpack (NPM).
For a more complete implementation see opal-sprockets (Rubygems) or
development.
Opal::Builder and Ruby corelib/stdlib. It’s meant to be used just for local
Opal::SimpleServer is a very basic Rack server for Opal assets, it relies on

def append_path(path)

Deprecated:

def append_path(path)
  Opal.deprecation "`#{self.class}#append_path` is deprecated, please use `Opal.append_path(path)` instead (called from: #{caller(1, 1).first})"
  Opal.append_path path
end

def builder(path)

def builder(path)
  builder = Opal::Builder.new
  builder.build(path.gsub(/(\.(?:rb|js|opal))*\z/, ''))
end

def cache_invalidator

def cache_invalidator
  "?#{Time.now.to_i}"
end

def call(env)

def call(env)
  case env['PATH_INFO']
  when %r{\A/#{@prefix}/(.*)\.m?js\z}
    path, _cache_invalidator = Regexp.last_match(1).split('?', 2)
    call_js(path)
  else call_index
  end
rescue NotFound => error
  [404, {}, [error.to_s]]
end

def call_index

def call_index
  if @index_path
    contents = File.read(@index_path)
    html = ERB.new(contents).result binding
  else
    html = <<-HTML
    <!doctype html>
    <html>
      <head>
        <meta charset="utf-8">
      </head>
      <body>
        #{javascript_include_tag(main)}
      </body>
    </html>
    HTML
  end
  [200, { 'content-type' => 'text/html' }, [html]]
end

def call_js(path)

def call_js(path)
  asset = fetch_asset(path)
  [
    200,
    { 'content-type' => 'application/javascript' },
    [asset[:data], "\n", asset[:map].to_data_uri_comment],
  ]
end

def fetch_asset(path)

def fetch_asset(path)
  builder = self.builder(path)
  {
    data: builder.to_s,
    map: builder.source_map
  }
end

def initialize(options = {})

def initialize(options = {})
  @prefix = options.fetch(:prefix, 'assets')
  @main = options.fetch(:main, 'application')
  @index_path = nil
  yield self if block_given?
  freeze
end

def javascript_include_tag(path)

def javascript_include_tag(path)
  case Opal::Config.esm
  when true
    %{<script src="/#{@prefix}/#{path}.mjs#{cache_invalidator}" type="module"></script>}
  when false
    %{<script src="/#{@prefix}/#{path}.js#{cache_invalidator}"></script>}
  end
end

Modules

Classes